be back in circulation

1. To be engaging in social activities, typically after an absence. Now that my exams are done, I'm excited to be back in circulation and see my friends again. Is Jill back in circulation now? I know she was in the hospital for a while there. I was sick for weeks, so, believe me, I am thrilled to be back in circulation again!

2. To be ready to date again after the end of a relationship. I hope to spend some time with Matt now that he's single again and back in circulation. No, Martha's not back in circulation yet, she's still grieving the death of her husband. The break-up was really tough, and I'm in no rush to be back in circulation.